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https://github.com/RGBCube/serenity
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pls: Port to LibMain :^)
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2 changed files with 23 additions and 59 deletions
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@ -5,98 +5,61 @@
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/ScopeGuard.h>
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#include <LibCore/Account.h>
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#include <LibCore/ArgsParser.h>
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#include <LibCore/GetPassword.h>
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#include <LibCore/System.h>
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#include <LibMain/Main.h>
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#include <stdio.h>
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#include <unistd.h>
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int main(int argc, char** argv)
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ErrorOr<int> serenity_main(Main::Arguments arguments)
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{
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Vector<char const*> command;
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Core::ArgsParser args_parser;
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uid_t as_user_uid = 0;
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args_parser.add_option(as_user_uid, "User to execute as", nullptr, 'u', "UID");
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args_parser.add_positional_argument(command, "Command to run at elevated privilege level", "command");
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args_parser.parse(argc, argv);
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args_parser.parse(arguments);
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if (pledge("stdio rpath exec id tty", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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TRY(Core::System::pledge("stdio rpath exec id tty"));
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if (seteuid(0) < 0) {
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perror("seteuid");
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return 1;
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}
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TRY(Core::System::seteuid(0));
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// Fail gracefully if as_user_uid is invalid
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auto as_user_or_error = Core::Account::from_uid(as_user_uid);
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if (as_user_or_error.is_error()) {
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warnln("{}", as_user_or_error.error());
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return 1;
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}
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auto as_user = TRY(Core::Account::from_uid(as_user_uid));
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// If the current user is not a superuser, make them authenticate themselves.
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if (auto uid = getuid()) {
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auto account_or_error = Core::Account::from_uid(uid);
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if (account_or_error.is_error()) {
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warnln("{}", account_or_error.error());
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return 1;
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}
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auto const& account = account_or_error.value();
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auto account = TRY(Core::Account::from_uid(uid));
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if (account.has_password()) {
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auto password_or_error = Core::get_password();
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if (password_or_error.is_error()) {
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warnln("{}", password_or_error.error());
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return 1;
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}
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auto const& password = password_or_error.value();
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if (!account.authenticate(password)) {
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warnln("Incorrect or disabled password.");
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return 1;
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}
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auto password = TRY(Core::get_password());
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if (!account.authenticate(password))
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return Error::from_string_literal("Incorrect or disabled password."sv);
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}
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}
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if (pledge("stdio rpath exec id", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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TRY(Core::System::pledge("stdio rpath exec id"));
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if (setgid(0) < 0) {
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perror("setgid");
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return 1;
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}
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TRY(Core::System::setgid(0));
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TRY(Core::System::setuid(as_user_uid));
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if (setuid(as_user_uid) < 0) {
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perror("setuid");
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return 1;
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}
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TRY(Core::System::pledge("stdio rpath exec"));
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if (pledge("stdio rpath exec", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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Vector<char const*> arguments;
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Vector<char const*> exec_arguments;
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for (auto const& arg : command)
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arguments.append(arg);
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arguments.append(nullptr);
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exec_arguments.append(arg);
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exec_arguments.append(nullptr);
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Vector<String> environment_strings;
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if (auto* term = getenv("TERM"))
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environment_strings.append(String::formatted("TERM={}", term));
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Vector<char const*> environment;
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Vector<char const*> exec_environment;
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for (auto& item : environment_strings)
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environment.append(item.characters());
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environment.append(nullptr);
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exec_environment.append(item.characters());
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exec_environment.append(nullptr);
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if (execvpe(command.at(0), const_cast<char**>(arguments.data()), const_cast<char**>(environment.data())) < 0) {
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if (execvpe(command.at(0), const_cast<char**>(exec_arguments.data()), const_cast<char**>(exec_environment.data())) < 0) {
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perror("execvpe");
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exit(1);
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}
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